One day ns was driving our 2001 Buick Century Custom, and also I noticed the the odometer wasn"t lit up. At very first I assumed that a bulb was out, but this tool panel swarm (IPC) is totally digital, for this reason there space no bulbs in those locations. The odometer/tripometer is all LED segment displays. That wasn"t until later I noticed that the transmission indicator was likewise unlit. This have the right to be attention if friend think you room in park and also are in reality in reverse and let off of the brake. Mine wife and I type of just dealt with the absence of indications for a few months until I ultimately got approximately to resolving it. Because there to be no erratic behavior of any kind of sort, ns figured this was just a faulty discrete component what and collection out to look for it. If certain parts of her IPC room not illuminated once they have to be, there is a good chance the this is what"s wrong with it. Ns have found lots of world who had actually or are having the precise same issue, and also this procedure fixed them all!


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While this isn"t a precise list that what you might need, it should acquire you began on the best track.  come remove and also open the instrument panel cluster I used: Socket collection with expansion - mostly a 7mm Socket Battery Terminal Wrench - identical to a 1/4" socket in most cases Auto Carpet Plug Puller - Pliers and also a level head screwdriver have to work as well Pliers level head screwdriver To settle the IPC i used: Soldering iron and also solder Alcohol wipes 4 x 150 ohm resistors


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Anytime I occupational on a vehicle, the first thing I execute is disconnect the battery. The easiest method is by removing the an adverse terminal - the black color one the connects the battery to the car chassis. This is whereby the battery terminal wrench come in handy, but if friend don"t have actually one a pair that pliers, a wrench, or 1/4" socket should work fine. Don"t freak out if you view (or hear) a couple of sparks together the cable is disconnected. 


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The instrument panel swarm is the repertoire of gauges sit behind her steering wheel. The is organized in ar by a couple of screws, however getting come it can be a challenge because of every one of the other dash board parts in her way. To eliminate the IPC, you will certainly pretty much need to dismantle the entire dash compartment. Many of the plastic pieces space slid right into place on one end and also bolted in ~ the other. Removing the bolts permits you to slide the pieces out. The various other thing in the way is every one of the carpet pieces supplied to cover increase the mess of wires below the dash. These can be tricky to remove with a plug puller, however you should have the ability to pry them out with other tools. A great idea is to begin with the tiny pieces top top the sides of the dash (what would be up versus the inside of the vehicle doors when they room closed, and work in the direction of the big dash piece from there. The screws and plugs will certainly all be on the under side of the dash, so get down there and get to it! try to only remove what you have to in stimulate to get to the IPC, and also don"t lose any kind of of those screws...

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With the dash the end of the way, girlfriend should have the ability to get to the screws hold the IPC in place. Over there are four of them, and also they might take a strange screwdriver head. There will certainly be a huge wire harness linked to the IPC - mine was on the back left side. You"ll probably have to put the an essential in the ignition to unlock and change the gear transition as well as the steering wheel come gain an ext access room. The IPC cable harness is organized on with a couple of clip tabs. I had the ability to pry them open with a flat head screwdriver. Be careful not come break off the tabs! v the harness unhooked, there have to be nothing preventing the IPC from coming out. Be sure to put the car back in park so it doesn"t role off!


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Once you have actually the IPC come your occupational space, upper and lower reversal it over and locate the many tabs holding the situation onto the earlier of the thing. You can use a flat head screwdriver to pry lock loose. This need to reveal the back of the dashboard circuit board. The prior of the panel can now additionally be removed, yet you may have to pry up on the a bit to disconnect the knobs connecting the circuit board to the gauges. 


With the case fully removed, friend should be able to see the finish circuit board. Find a team of four resistors in the upper appropriate hand corner of the circuit board. They will certainly not look like common resistors, but more like metal cylinders. Girlfriend may an alert that one or much more of this resistors is crumbling or has come off of the board fully - this is the factor the circuit isn"t working correctly.

Remove the resistors and also clean off the pads v rubbing alcohol. Then, include a autumn of solder to each pad to prepare it for the brand-new resistors.

You will certainly need 4 150 ohm resistors (1/4 Watt) to replace the old ones. Through hole resistors (Color code: brown - eco-friendly - brown - gold/silver) are fine. Clip the leads and fold them over before coating each lead through a little of solder. Then, attach the resistors one by one whereby the old ones provided to be. Don"t problem if girlfriend accidentally bridge them together (like i did), they room all in parallel anyway.

When you are finished, you deserve to use a multimeter to examine your work. Four parallel 150 ohm resistors should have an identical resistance the 37.5 ohms.

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When you space satisfied, put the panel earlier together and also put it back in the car. You might want to test it out prior to you put every one of the dash ago together as well. Don"t forget come reconnect the battery cable! If that still doesn"t occupational right, climate there is probably something else much more seriously wrong.